A) \[F{{e}^{3+}}\] ion coagulates blood, which is a negatively charged sol
B) \[F{{e}^{3+}}\] ion coagulates blood, which is a positively charged sol
C) \[C{{l}^{-}}\] coagulates blood, which is a positively charged sol
D) \[C{{l}^{-}}\] ion coagulates blood, which is a negatively charged sol
Correct Answer: A
Solution :
\[FeC{{l}_{3}}\]is a electrolyte give \[F{{e}^{3+}}\]and blood contain negatively colloid so stop bleeding due to coagulation.
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